A vibratory-type triboelectric charging device design of experiments based modelling for controllable and uncontrollable parameters effect study

Abstract

The aim of the present paper is to study the effect of the controllable and uncontrollable parameters on the charge per mass ratio of the triboelectrical vibratory charging device. The controllable parameters are related to the device, which are the feed rate, the particle velocity, and the length of the vibrating plate. The uncontrollable ones are those related to the intrinsic properties of the materials involved in the triboelectrical charging. The design of experiments approach, leading to model the system, is used to determine the optimal operating parameters of the vibratory feeding of the mechanism triboelectric charging for plastic pellets. A series of tribocharging experiments are conducted on acrylonitrile-butadiene-styrene (ABS) and high-impact polystyrene (HIPS) granules, with a particle size of 1–2 mm, to figure out the behavior of materials representing uncontrollable parameters and the limit range of controllable parameters. The obtained results, based on the design of experiments method, show the influence of control and correlation between the controllable parameters to get a satisfied charge per mass ratio, which is also strongly influenced by the uncontrollable parameters.